Answer:
Step-by-step explanation:
step a system of two equations c = child ticket a = adult ticket
eq 1) 2c + 1a = 8.2 multiply by 2
eq 2) 3c + 2a = 14.1
I will multiply eq 1 times TWO and subtract eq 2 from eq 1a)
eq 1a) 4c + 2a = 16.4
eq 2) 3c + 2a = 14.1
subtract (4c - 3c) + (2a -2a) = 16.4 - 14.1
c + 0 = 2.3 euros for one child ticket
Now find the adult ticket price, plug 2.3 for c into eq 1)
eq 1) 2c + 1a = 8.2
eq 1) 2(2.3) + 1a = 8.2 solve for a
4.6 + a = 8.2 substract 4.6 from both sides
a = 8.2 - 4.6
= 3.6 euros for one adult ticket
double check using eq 2) we know c and a values
eq 2) 3c + 2a = 14.1
eq 2) 3(2.3) + 2(3.6) = 14.1
6.9 + 7.2 = 14.1
14.1 = 14.1
9x-5, I guess, not sure, but I'm combining like terms. Hope it's right.
Answer:
Step-by-step explanation:
We take two points (0,-3) and (4,0)
eq. of line thro' two points is y-y1=m(x-x1)
m=(y2-y1)/(x2-x1)=(0+3)/(4-0)=3/4
Reqd. eq . is y-(-3)=3/4(x-0)
or y=3/4(x)-3
Well.. a polynomial expression is an expression that has 3 or more different algebraic terms.
Algebraic terms can be: x^2, 2x, or x^3
One example is: x^2 + x^3 - 7y
Since x^(-2)+5 only has one algebraic term, which is x^(-2), this is not a polynomial.
